Home >

news Help

Publication Information


Title
Japanese: 
English:Dielectric response of 1,1-difluorosumanene caused by an in-plane motion 
Author
Japanese: M. Li, J. Y. Wu, K. Sambe, Y. Yakiyama, 芥川 智行, 梶谷 孝, 福島 孝典, K. Matsuda, 櫻井 英博.  
English: M. Li, J. Y. Wu, K. Sambe, Y. Yakiyama, T. Akutagawa, T. Kajitani, T. Fukushima, K. Matsuda, H. Sakurai.  
Language English 
Journal/Book name
Japanese: 
English:Materials Chemistry Frontiers 
Volume, Number, Page        
Published date Apr. 9, 2022 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Official URL https://pubs.rsc.org/en/content/articlelanding/2022/QM/D2QM00134A
 
DOI https://doi.org/10.1039/D2QM00134A
Abstract We have designed and synthesized a new curved π-conjugated molecule, 1,1-difluorosumanene (1), which possesses two fluorine atoms on the same benzylic carbon of unsubstituted sumanene, producing a large dipole moment along the in-plane direction. Thermal analyses, variable-temperature X-ray diffraction, and IR measurements indicated a 120° in-plane motion of 1 in the stacking columns, which did not cause any phase transition in the crystalline state. Indeed, dielectric measurements on powder and single-crystal forms of 1 showed that both the real (ε1) and imaginary (ε2) parts of the dielectric constant were enhanced above ∼360 K at 1 MHz with a Debye-type dielectric relaxation, confirming that 1 underwent a pendulum fluctuation induced by the external electric field.

©2007 Tokyo Institute of Technology All rights reserved.